Harry Melling was 12 in Harry Potter and the Chamber of Secrets when he played the character 'Dudley Dursley'.
That was over 21 years ago in 2002.
Today he is 35, and has starred in 17 movies in total, 15 of those since Harry Potter and the Chamber of Secrets was released.
In Harry Potter and the Chamber of Secrets, I think Harry Melling looks: